Combined blower and powder spraying device



April 4, 1939.

H. W. HOFFMAN COMBINED BLOWER AND POWDER SPRAYING DEVICE Filed Oct. 29,1937 Patented Apr. 4, 1939 UNITED STATES PATENT OFFICE cotmmnn BLOWERAND rowpnn srnumo DEVICE Harley W. Hoffman, Akron, Ohio ApplicationOctober 29, 1937, Serial No. 171,739 h r 6 Claims.

device, forblowing hair-cuttings off the skin of a patron. after hishair has been out, for drying the skingand for applying powder, such astalcum powder, to the skin after hair-cuts and shaves, such device toreplace the unsanitary brush or towel heretofore used for brushing of!the hair or drying the skin or for applying powder.

The foregoing and other purposes of the invention are attained in thecombined blower and powder spraying device illustrated in .theaccompanying drawing. and described below. It is to be understood thatthe invention is not limited to the specific form thereof shown anddescribed.

f the accompanying drawing:

Figure 1 is a top plan view of a blower embodying the invention, and

Figure 2 is a section on line 2-2 of Figure 1.

Referring to the drawing, the numeral in designates a gun having ahandle through which may be formed a bore or duct l2, which may beconnected by a nipple I8 with a flexible airsupply line l4, which isconnected to a suitable source of air under pressure.

Duct l2 extends to a valve bore IS in the gun, the outer end of whichmay be closed by a removable plug IG, and in which is arranged a valvell seating at l8 and controlling admission of air under pressure to aduct i9 which extends upwardly and the top end of which may be closed bya removable plug 28. Duct l9 communicates with a duct 2| extending alongthe barrel 22 of gun Hi to the end thereof. In the end of the barrel, arestriction may be provided in duct 2| by removably securing therein aplug 24 with a small outlet orifice 28 for directing a fine stream ofair under substantial force against the surface of the skin of a patron.

Branching from duct 2| is a duct 26 leading to a valve 21 controllingadmissionof air under pressure to a receptacle 28, removably secured onthe bottom of the gun barrel 22 as shown in Figure 2. Communication fromvalve 21 to receptacle 28 is established by duct 28 in which may be arestriction provided by a plug 80 having a small air-outlet orifice 8|whereby when valve 21 is open a thin .stream of air will be directedunder substantial pressure down into receptacle 28 and into a supply ofpowder 82 contained therein.

A duct 88 extends from receptacle 28 and along the barrel 22 to the endthereof, such duct being preferably unrestricted for free passage of airand entrained powder through the duct and out of the end of the barrel,and onto the surface of a patron's skin.

It is desirable that the combined blower and powder spray device beadapted to be used at will to apply a stream of air, without powder, forblowing off hair-cuttings, drying the-skin, 10 etc., and for supplyingwhen desired a spray of ,powder to be applied, over the surface of theskin after hair-cuts and shaves. To this end valve has a forwardlyextending stem 84 projecting from the gun and on which is a compressionspring 85 operating against a flange 88 so as normally to hold thevalve; I! closed. Likewise valve 21 has a rearwardly projecting stem 81on which is a compression spring 88 operating against a flange 89 so asnormally to maintain valve 21 closed. Valve stems 84 and 81 are soarranged as to be operable by a single trigger 48, valve stem 81extending through an aperture 4| in the trigger which is arranged toengage the flange 88 to open valve 21 against the action of 25 spring88, and the end of valve stem 84 being arranged to be engaged as thetrigger is pulled to open valve Valve stem 84 and fiange 88 on valvestem 88 are so arranged that pulling of the trigger against spring '85will first open valve 80 II to cause the gun to emit a stream of aironly out of orifice 24. Pulling of the trigger further, and against theadditional pressure of spring 88 will open valve 21 and send a thinstream of air under pressure down into receptacle 28 stirring up thecontents thereof whereby the powder 82 will be entrained in the air andwill pass freely through duct 88 and out of the end of the gun. Thetrigger may be pivoted on the gun as at 48'.

It will be apparent that with the device, the surface of the skin may bequickly dried by evaporation by application of a stream of rapidlymoving air, hair-cuttings may be effectively blown from the surface ofthe skin and powder may be applied to the surface of the skin, allwithout application of towels, brushes or other unsanitary devices tothe surface of the skin.

Modifications of the invention may be resorted to without departing fromthe spirit thereof or 50 the scope of the appended claims.

What is claimed is:

1. A combined air blower and powder spraying device comprising meansproviding an air duct,

a valve on said air duct, means providing an air 2 outlet duct from saidvalve. a powder receptacle.

' means providing a duct connecting said air outlet duct with saidpowder receptacle. a valve on said connecting duct, means providing anair and powder outlet duct from said receptacle, and means for operatingsaid valves so as to supply a stream 0! air only from said device or astream of air along with entrained powder.

2. A combined air blower and powder spraying device comprising meansproviding an air duct a valve on said air duct, means providing an airoutlet duct from said valve, a powder receptacle, means providing a ductconnecting saidair outlet duct with said powder receptacle, a valve onsaid connecting duct, means providing an air and powder outlet duct fromsaid rece'ptacle, and means for operating said valves so as to supply astream of air only from said device or a stream oi air along withentrained powder,"

means for operating said valves so as to supply a stream of air onlyfrom said device or 'a' stream of air along with entrained powder, saidconnecting duct havingm restricted outlet orifice for supplying air tosaid receptacle.

4, A combined air blower and powder spraying device comprising meansproviding an air duct, a valve on said air duct, means providing an airoutlet duct from said valve, a powder receptacle, means providing a ductconnecting said air...

outlet duct with said powder receptacle, a valve on said connectingduct, means providing an air and powder outlet duct from saidreceptacle, and means for operating said valves.

5. A device oi the character described comprising means providing a ductfor directing a stream 01 air, means for supplying air to said duct,means for maintaining a supply oi'.powder in the device, means.providing a separate duct for directing a stream 0! air from thesupplying means into said powder, and means providing a separate ductfor directing a stream of air and entrained powder from the powdersupply, and means operable at will to provide a stream of air alone fromsaid first named duct or a stream of air along'with entrained powderfrom said last named duct.

' 6. A combined air blower and powder spraying device comprising meansproviding an air duct, a. valve on said air duct, means providing an airoutlet duct from said valve, a powder receptacle, means providing a ductconnecting said air outlet duct with said powder receptacle, a valve onsaid connecting duct, means providing an air and powder outlet duct fromsaid receptacle and means for operating said valves so as to supply astream of air only from said device or a stream of air along withentrained powder, said means comprising a movable trigger so associatedwith said valves as .to be operable over a portion of its movement toopen only the valve I on said first-named air duct and upon continuation01 said movement to open the valve on said connecting duct.

* HARLEY W. HOFFMAN.

